package com.sias.mianshiya.controller;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.sias.mianshiya.annotation.AuthCheck;
import com.sias.mianshiya.common.BaseResponse;
import com.sias.mianshiya.common.DeleteRequest;
import com.sias.mianshiya.common.ErrorCode;
import com.sias.mianshiya.common.ResultUtils;
import com.sias.mianshiya.constant.UserConstant;
import com.sias.mianshiya.exception.BusinessException;
import com.sias.mianshiya.exception.ThrowUtils;
import com.sias.mianshiya.model.dto.question.QuestionQueryRequest;
import com.sias.mianshiya.model.dto.questionBank.QuestionBankAddRequest;
import com.sias.mianshiya.model.dto.questionBank.QuestionBankEditRequest;
import com.sias.mianshiya.model.dto.questionBank.QuestionBankQueryRequest;
import com.sias.mianshiya.model.dto.questionBank.QuestionBankUpdateRequest;
import com.sias.mianshiya.model.entity.Question;
import com.sias.mianshiya.model.entity.QuestionBank;
import com.sias.mianshiya.model.entity.User;
import com.sias.mianshiya.model.vo.QuestionBankVO;
import com.sias.mianshiya.service.QuestionBankService;
import com.sias.mianshiya.service.QuestionService;
import com.sias.mianshiya.service.UserService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;

/**
 * 题库接口
 *
 * @author <a href="https://github.com/lisias">程序员鱼皮</a>
 * @from <a href="https://www.code-nav.cn">编程导航学习圈</a>
 */
@RestController
@RequestMapping("/questionBank")
@Slf4j
public class QuestionBankController {

  @Resource
  private QuestionBankService questionBankService;

  @Resource
  private UserService userService;

  @Resource
  private QuestionService questionService;

  // region 增删改查

  /**
   * 创建题库
   *
   * @param questionBankAddRequest
   * @param request
   * @return
   */
  @PostMapping("/add")
  public BaseResponse<Long> addQuestionBank(@RequestBody QuestionBankAddRequest questionBankAddRequest, HttpServletRequest request) {
    ThrowUtils.throwIf(questionBankAddRequest == null, ErrorCode.PARAMS_ERROR);
    // todo 在此处将实体类和 DTO 进行转换
    QuestionBank questionBank = new QuestionBank();
    BeanUtils.copyProperties(questionBankAddRequest, questionBank);
    // 数据校验
    questionBankService.validQuestionBank(questionBank, true);
    // todo 填充默认值
    User loginUser = userService.getLoginUser(request);
    questionBank.setUserId(loginUser.getId());
    // 写入数据库
    boolean result = questionBankService.save(questionBank);
    ThrowUtils.throwIf(!result, ErrorCode.OPERATION_ERROR);
    // 返回新写入的数据 id
    long newQuestionBankId = questionBank.getId();
    return ResultUtils.success(newQuestionBankId);
  }

  /**
   * 删除题库
   *
   * @param deleteRequest
   * @param request
   * @return
   */
  @PostMapping("/delete")
  public BaseResponse<Boolean> deleteQuestionBank(@RequestBody DeleteRequest deleteRequest, HttpServletRequest request) {
    if (deleteRequest == null || deleteRequest.getId() <= 0) {
      throw new BusinessException(ErrorCode.PARAMS_ERROR);
    }
    User user = userService.getLoginUser(request);
    long id = deleteRequest.getId();
    // 判断是否存在
    QuestionBank oldQuestionBank = questionBankService.getById(id);
    ThrowUtils.throwIf(oldQuestionBank == null, ErrorCode.NOT_FOUND_ERROR);
    // 仅本人或管理员可删除
    if (!oldQuestionBank.getUserId().equals(user.getId()) && !userService.isAdmin(request)) {
      throw new BusinessException(ErrorCode.NO_AUTH_ERROR);
    }
    // 操作数据库
    boolean result = questionBankService.removeById(id);
    ThrowUtils.throwIf(!result, ErrorCode.OPERATION_ERROR);
    return ResultUtils.success(true);
  }

  /**
   * 更新题库（仅管理员可用）
   *
   * @param questionBankUpdateRequest
   * @return
   */
  @PostMapping("/update")
  @AuthCheck(mustRole = UserConstant.ADMIN_ROLE)
  public BaseResponse<Boolean> updateQuestionBank(@RequestBody QuestionBankUpdateRequest questionBankUpdateRequest) {
    if (questionBankUpdateRequest == null || questionBankUpdateRequest.getId() <= 0) {
      throw new BusinessException(ErrorCode.PARAMS_ERROR);
    }
    // todo 在此处将实体类和 DTO 进行转换
    QuestionBank questionBank = new QuestionBank();
    BeanUtils.copyProperties(questionBankUpdateRequest, questionBank);
    // 数据校验
    questionBankService.validQuestionBank(questionBank, false);
    // 判断是否存在
    long id = questionBankUpdateRequest.getId();
    QuestionBank oldQuestionBank = questionBankService.getById(id);
    ThrowUtils.throwIf(oldQuestionBank == null, ErrorCode.NOT_FOUND_ERROR);
    // 操作数据库
    boolean result = questionBankService.updateById(questionBank);
    ThrowUtils.throwIf(!result, ErrorCode.OPERATION_ERROR);
    return ResultUtils.success(true);
  }

  /**
   * 根据 id 获取题库（封装类）
   *
   * @param questionBankQueryRequest
   * @return
   */
  @GetMapping("/get/vo")
  public BaseResponse<QuestionBankVO> getQuestionBankVOById(QuestionBankQueryRequest questionBankQueryRequest, HttpServletRequest request) {
    ThrowUtils.throwIf(questionBankQueryRequest == null, ErrorCode.PARAMS_ERROR);
    Long id = questionBankQueryRequest.getId();

    ThrowUtils.throwIf(id <= 0, ErrorCode.PARAMS_ERROR);
    // 查询数据库
    QuestionBank questionBank = questionBankService.getById(id);
    ThrowUtils.throwIf(questionBank == null, ErrorCode.NOT_FOUND_ERROR);
    QuestionBankVO questionBankVO = questionBankService.getQuestionBankVO(questionBank, request);
    // 是否关联查询题库下的题目列表
    Boolean needQueryQuestionList = questionBankQueryRequest.getNeedQueryQuestionList();
    if (needQueryQuestionList != null && needQueryQuestionList) {
      QuestionQueryRequest questionQueryRequest = new QuestionQueryRequest();
      questionQueryRequest.setQuestionBankId(id);
      questionQueryRequest.setCurrent(questionBankQueryRequest.getCurrent());
      questionQueryRequest.setPageSize(questionBankQueryRequest.getPageSize());
      Page<Question> questionPage = questionService.listQuestionByPage(questionQueryRequest);
      questionBankVO.setQuestionPage(questionPage);
    }
    // 获取封装类
    return ResultUtils.success(questionBankVO);
  }

  /**
   * 分页获取题库列表（仅管理员可用）
   *
   * @param questionBankQueryRequest
   * @return
   */
  @PostMapping("/list/page")
  @AuthCheck(mustRole = UserConstant.ADMIN_ROLE)
  public BaseResponse<Page<QuestionBank>> listQuestionBankByPage(@RequestBody QuestionBankQueryRequest questionBankQueryRequest) {
    long current = questionBankQueryRequest.getCurrent();
    long size = questionBankQueryRequest.getPageSize();
    // 查询数据库
    Page<QuestionBank> questionBankPage = questionBankService.page(new Page<>(current, size),
            questionBankService.getQueryWrapper(questionBankQueryRequest));
    return ResultUtils.success(questionBankPage);
  }

  /**
   * 分页获取题库列表（封装类）
   *
   * @param questionBankQueryRequest
   * @param request
   * @return
   */
  @PostMapping("/list/page/vo")
  public BaseResponse<Page<QuestionBankVO>> listQuestionBankVOByPage(@RequestBody QuestionBankQueryRequest questionBankQueryRequest,
                                                                     HttpServletRequest request) {
    long current = questionBankQueryRequest.getCurrent();
    long size = questionBankQueryRequest.getPageSize();
    // 限制爬虫
    ThrowUtils.throwIf(size > 20, ErrorCode.PARAMS_ERROR);
    // 查询数据库
    Page<QuestionBank> questionBankPage = questionBankService.page(new Page<>(current, size),
            questionBankService.getQueryWrapper(questionBankQueryRequest));
    // 获取封装类
    return ResultUtils.success(questionBankService.getQuestionBankVOPage(questionBankPage, request));
  }

  /**
   * 分页获取当前登录用户创建的题库列表
   *
   * @param questionBankQueryRequest
   * @param request
   * @return
   */
  @PostMapping("/my/list/page/vo")
  public BaseResponse<Page<QuestionBankVO>> listMyQuestionBankVOByPage(@RequestBody QuestionBankQueryRequest questionBankQueryRequest,
                                                                       HttpServletRequest request) {
    ThrowUtils.throwIf(questionBankQueryRequest == null, ErrorCode.PARAMS_ERROR);
    // 补充查询条件，只查询当前登录用户的数据
    User loginUser = userService.getLoginUser(request);
    questionBankQueryRequest.setUserId(loginUser.getId());
    long current = questionBankQueryRequest.getCurrent();
    long size = questionBankQueryRequest.getPageSize();
    // 限制爬虫
    ThrowUtils.throwIf(size > 20, ErrorCode.PARAMS_ERROR);
    // 查询数据库
    Page<QuestionBank> questionBankPage = questionBankService.page(new Page<>(current, size),
            questionBankService.getQueryWrapper(questionBankQueryRequest));
    // 获取封装类
    return ResultUtils.success(questionBankService.getQuestionBankVOPage(questionBankPage, request));
  }

  /**
   * 编辑题库（给用户使用）
   *
   * @param questionBankEditRequest
   * @param request
   * @return
   */
  @PostMapping("/edit")
  public BaseResponse<Boolean> editQuestionBank(@RequestBody QuestionBankEditRequest questionBankEditRequest, HttpServletRequest request) {
    if (questionBankEditRequest == null || questionBankEditRequest.getId() <= 0) {
      throw new BusinessException(ErrorCode.PARAMS_ERROR);
    }
    // todo 在此处将实体类和 DTO 进行转换
    QuestionBank questionBank = new QuestionBank();
    BeanUtils.copyProperties(questionBankEditRequest, questionBank);
    // 数据校验
    questionBankService.validQuestionBank(questionBank, false);
    User loginUser = userService.getLoginUser(request);
    // 判断是否存在
    long id = questionBankEditRequest.getId();
    QuestionBank oldQuestionBank = questionBankService.getById(id);
    ThrowUtils.throwIf(oldQuestionBank == null, ErrorCode.NOT_FOUND_ERROR);
    // 仅本人或管理员可编辑
    if (!oldQuestionBank.getUserId().equals(loginUser.getId()) && !userService.isAdmin(loginUser)) {
      throw new BusinessException(ErrorCode.NO_AUTH_ERROR);
    }
    // 操作数据库
    boolean result = questionBankService.updateById(questionBank);
    ThrowUtils.throwIf(!result, ErrorCode.OPERATION_ERROR);
    return ResultUtils.success(true);
  }

  // endregion
}
